Welcome to CS.
Its elementary really at this point and there are just a couple of things to say that will help you get well on your way:
a) yes over a short period the character of the water coming through the machine will settle down and improve and,
b) over a longer period you will develop (either through your experience over time OR by undertaking training asap) a good operator technique to suit the machine (in conjunction with whatever grinder you use and the beans in use).
Both the above will improve your result out of sight, and its all about time, perseverence and patience.......no matter what brand / model equipment you purchase.
Hope that helps.
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